package collection;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class SortPoint {
    public static void main(String[] args) {
        List<collection.Point> list=new ArrayList<>();
        list.add(new collection.Point(5,8));
        list.add(new collection.Point(10,20));
        list.add(new collection.Point(25,52));
        list.add(new collection.Point(45,30));
        list.add(new collection.Point(15,80));
        list.add(new collection.Point(1,2));
        System.out.println("原始数据为："+list);

        list.sort(new Comparator<collection.Point>() {
            @Override
            public int compare(collection.Point o1, collection.Point o2) {
                return o1.getX()-o2.getX();
            }
        });
        /*
        Collections.sort(list, new Comparator<Point>() {
            @Override
            public int compare(Point o1, Point o2) {
                int len1= o1.getX()*o1.getX()+ o1.getY()*o1.getY();
                int len2= o2.getX()*o2.getX()+ o2.getY()*o2.getY();
                return len1-len2;//升序
            }
        });
        System.out.println("排序后为："+list);

         */
    }
}
